The Overly Attached Girlfriend

The Overly Attached Girlfriend meme has been seen a few million times. The photo was yanked from a YouTube video in which a girl sang a rendition of Justin Bieber's song, 'Boyfriend.'
http://www.youtube.com/watch?v=Yh0AhrY9GjA

Success Kid

Success Kid, sometimes known as I Hate Sandcastles. The original image was taken by photographer Laney Griner of her then 11-month-old son Sammy on August 26th, 2007. She posted it to both her personal Flickr account and put it up on Getty Images, which has since been removed.

Laney Griner has continued to post photos of Sammy on her Flickr through the years, who turned four-years-old in 2011. Photos of older Sammy were shared on Reddit, Blame it on The Voices and the Daily What in November 2011.

Sudden Clarity Clarence

The original stock photo was submitted to the Australia Associated Press covering the Schoolies festival on Queensland, Australia’s Gold Coast. on November 21st, 2009. On November 23rd, 2011, Redditor NorthernSkeptic submitted a post titled “Introducing Sudden Clarity Clarence” that included an image macro with the caption “Oh my God / dubstep sucks.” The thread subsequently reached the front page of the /r/AdviceAnimals subreddit.

On March 6th, 2012, Redditor duckareokay submitted a post to the /r/AdviceAnimals subreddit titled “A true moment of clarity” featuring a photograph of a man mimicking the Suddenly Clarity Clarence with the caption “I’m a meme.” Redditor Badk1d replied to the thread claiming his classmate Will G from southern California was the real Clarity Clarence and presented a photo as evidence. Neither of the students were from Australia where the original stock photo was taken.